diff --git a/package-lock.json b/package-lock.json
index 5050697..3c08ee5 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -28,6 +28,19 @@
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         "chalk": "^2.0.0",
         "js-tokens": "^4.0.0"
+      },
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+          "dev": true,
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+            "supports-color": "^5.3.0"
+          }
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@@ -37,9 +50,9 @@
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-      "resolved": "https://registry.npmjs.org/acorn/-/acorn-7.1.1.tgz",
-      "integrity": "sha512-add7dgA5ppRPxCFJoAGfMDi7PIBXq1RtGo7BhbLaxwrXPOmw8gq48Y9ozT01hUKy9byMjlR20EJhu5zlkErEkg==",
+      "version": "7.2.0",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-7.2.0.tgz",
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@@ -130,14 +143,55 @@
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-      "resolved": "https://registry.npmjs.org/chalk/-/chalk-2.4.2.tgz",
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+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/chalk/-/chalk-4.0.0.tgz",
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-        "escape-string-regexp": "^1.0.5",
-        "supports-color": "^5.3.0"
+        "ansi-styles": "^4.1.0",
+        "supports-color": "^7.1.0"
+      },
+      "dependencies": {
+        "ansi-styles": {
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+          "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-4.2.1.tgz",
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+          "dev": true,
+          "requires": {
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+            "color-convert": "^2.0.1"
+          }
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+          "resolved": "https://registry.npmjs.org/color-convert/-/color-convert-2.0.1.tgz",
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+          "dev": true,
+          "requires": {
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+          }
+        },
+        "color-name": {
+          "version": "1.1.4",
+          "resolved": "https://registry.npmjs.org/color-name/-/color-name-1.1.4.tgz",
+          "integrity": "sha512-dOy+3AuW3a2wNbZHIuMZpTcgjGuLU/uBL/ubcZF9OXbDo8ff4O8yVp5Bf0efS8uEoYo5q4Fx7dY9OgQGXgAsQA==",
+          "dev": true
+        },
+        "has-flag": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-4.0.0.tgz",
+          "integrity": "sha512-EykJT/Q1KjTWctppgIAgfSO0tKVuZUjhgMr17kqTumMl6Afv3EISleU7qZUzoXDFTAHTDC4NOoG/ZxU3EvlMPQ==",
+          "dev": true
+        },
+        "supports-color": {
+          "version": "7.1.0",
+          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-7.1.0.tgz",
+          "integrity": "sha512-oRSIpR8pxT1Wr2FquTNnGet79b3BWljqOuoW/h4oBhxJ/HUbX5nX6JSruTkvXDCFMwDPvsaTTbvMLKZWSy0R5g==",
+          "dev": true,
+          "requires": {
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+          }
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@@ -183,9 +237,9 @@
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-      "integrity": "sha512-4Rjb1FnxtOcv9qsfuaNuVsmmVn4ooVoBHzYfyKteiXwIU84PClyGA5jASoFMwPV93+FPh9spwueXauxFJZkGAg==",
+      "version": "0.7.4",
+      "resolved": "https://registry.npmjs.org/comment-parser/-/comment-parser-0.7.4.tgz",
+      "integrity": "sha512-Nnl77/mt6sj1BiYSVMeMWzvD0183F2MFOJyFRmZHimUVDYS9J40AvXpiFA7RpU5pQH+HkvYc0dnsHpwW2xmbyQ==",
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@@ -195,24 +249,14 @@
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+      "version": "7.0.2",
+      "resolved": "https://registry.npmjs.org/cross-spawn/-/cross-spawn-7.0.2.tgz",
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-          "resolved": "https://registry.npmjs.org/semver/-/semver-5.7.1.tgz",
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-          "dev": true
-        }
+        "path-key": "^3.1.0",
+        "shebang-command": "^2.0.0",
+        "which": "^2.0.1"
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@@ -252,22 +296,22 @@
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-      "resolved": "https://registry.npmjs.org/eslint/-/eslint-6.8.0.tgz",
-      "integrity": "sha512-K+Iayyo2LtyYhDSYwz5D5QdWw0hCacNzyq1Y821Xna2xSJj7cijoLLYmLxTQgcgZ9mC61nryMy9S7GRbYpI5Ig==",
+      "version": "7.0.0",
+      "resolved": "https://registry.npmjs.org/eslint/-/eslint-7.0.0.tgz",
+      "integrity": "sha512-qY1cwdOxMONHJfGqw52UOpZDeqXy8xmD0u8CT6jIstil72jkhURC704W8CFyTPDPllz4z4lu0Ql1+07PG/XdIg==",
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-        "chalk": "^2.1.0",
-        "cross-spawn": "^6.0.5",
+        "chalk": "^4.0.0",
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         "debug": "^4.0.1",
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-        "espree": "^6.1.2",
-        "esquery": "^1.0.1",
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@@ -280,26 +324,25 @@
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-        "optionator": "^0.8.3",
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-        "semver": "^6.1.2",
-        "strip-ansi": "^5.2.0",
-        "strip-json-comments": "^3.0.1",
+        "regexpp": "^3.1.0",
+        "semver": "^7.2.1",
+        "strip-ansi": "^6.0.0",
+        "strip-json-comments": "^3.1.0",
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-      "resolved": "https://registry.npmjs.org/eslint-config-blueimp/-/eslint-config-blueimp-1.9.0.tgz",
-      "integrity": "sha512-30uqxKoc3/AAn7H2lzISh77SRAecZ3D52RBwLdrV5G/ZorWcPNX0ZnlTz68AnaXoIXFu6irkMs1Zi/KJaA5ZJQ==",
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/eslint-config-blueimp/-/eslint-config-blueimp-2.0.0.tgz",
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@@ -312,18 +355,26 @@
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-      "resolved": "https://registry.npmjs.org/eslint-plugin-jsdoc/-/eslint-plugin-jsdoc-24.0.0.tgz",
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+      "resolved": "https://registry.npmjs.org/eslint-plugin-jsdoc/-/eslint-plugin-jsdoc-25.4.0.tgz",
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       "dev": true,
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-        "comment-parser": "^0.7.2",
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         "lodash": "^4.17.15",
-        "regextras": "^0.7.0",
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@@ -346,9 +397,9 @@
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@@ -361,9 +412,9 @@
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@@ -732,13 +774,13 @@
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@@ -795,12 +837,6 @@
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@@ -820,17 +856,17 @@
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+      "resolved": "https://registry.npmjs.org/optionator/-/optionator-0.9.1.tgz",
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@@ -894,15 +930,15 @@
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@@ -952,24 +988,24 @@
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@@ -1034,34 +1070,15 @@
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+      "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-6.0.0.tgz",
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@@ -1091,6 +1108,12 @@
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+          "version": "4.1.0",
+          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-4.1.0.tgz",
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@@ -1113,6 +1136,15 @@
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           }
+        },
+        "strip-ansi": {
+          "version": "5.2.0",
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-5.2.0.tgz",
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+          "dev": true,
+          "requires": {
+            "ansi-regex": "^4.1.0"
+          }
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@@ -1138,18 +1170,18 @@
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-      "resolved": "https://registry.npmjs.org/tslib/-/tslib-1.11.1.tgz",
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+      "resolved": "https://registry.npmjs.org/tslib/-/tslib-1.12.0.tgz",
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-      "version": "0.3.2",
-      "resolved": "https://registry.npmjs.org/type-check/-/type-check-0.3.2.tgz",
-      "integrity": "sha1-WITKtRLPHTVeP7eE8wgEsrUg23I=",
+      "version": "0.4.0",
+      "resolved": "https://registry.npmjs.org/type-check/-/type-check-0.4.0.tgz",
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       "dev": true,
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-        "prelude-ls": "~1.1.2"
+        "prelude-ls": "^1.2.1"
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@@ -1159,9 +1191,9 @@
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-      "resolved": "https://registry.npmjs.org/uglify-js/-/uglify-js-3.9.1.tgz",
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+      "version": "3.9.3",
+      "resolved": "https://registry.npmjs.org/uglify-js/-/uglify-js-3.9.3.tgz",
+      "integrity": "sha512-r5ImcL6QyzQGVimQoov3aL2ZScywrOgBXGndbWrdehKoSvGe/RmiE5Jpw/v+GvxODt6l2tpBXwA7n+qZVlHBMA==",
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@@ -1183,9 +1215,9 @@
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+      "version": "2.0.2",
+      "resolved": "https://registry.npmjs.org/which/-/which-2.0.2.tgz",
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diff --git a/package.json b/package.json
index 55f212a..e452506 100644
--- a/package.json
+++ b/package.json
@@ -33,10 +33,10 @@
   },
   "license": "MIT",
   "devDependencies": {
-    "eslint": "6",
-    "eslint-config-blueimp": "1",
+    "eslint": "7",
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     "eslint-config-prettier": "6",
-    "eslint-plugin-jsdoc": "24",
+    "eslint-plugin-jsdoc": "25",
     "eslint-plugin-prettier": "3",
     "prettier": "2",
     "uglify-js": "3"